VCF - State Variable PCB

This filter includes simultaneous high-pass, low-pass and band pass outputs, voltage controllable cut off frequency and resonance (or Q) giving your imagination even more variables to play with as you experiment with sounds. Additionally it provides inputs for a three-signal mixer.

Introduction

Voltage Controlled Filters are, in my opinion, one of the coolest modules in any synthesizer. They can subtract or add harmonics from the original signal and dynamically change the harmonic content as they are swept by external control voltages or track the keyboard voltage used to control your oscillators. I love the sound of a couple of oscillators tuned low and close to unison put through a low pass filter with a fair amount of resonance. As you modulate the cut off frequency (also in the low range) it has the sound of an airplane passing overhead or a hoomy singer modulating the frequency content of their droning chant by formant filtering with the mouth and throat. And of course white noise through a slowly modulated resonant filter sounds like you're out on the frozen tundra. This filter includes simultaneous high-pass, low-pass and band pass outputs, voltage controllable cut off frequency and resonance (or Q) giving your imagination even more variables to play with as you experiment with sounds. Additionally it provides inputs for a three-signal mixer. This filter puts me in mind of the words of the Jamaican car salesman I purchased my MPV van from many years ago but instead of "Mahn you gonna love daht vahn mahn" I say to you... Mahn you gonna love daht filter Mahn.